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#2356 · 🐟 fish

Bigbelly Seahorse

Hippocampus abdominalis

LCleast concern 🐟 Fish 📍 outside Europe
Bigbelly Seahorse, photo 1 of 8
1/8 © Marine Explorer (Dr John Turnbull) · CC BY-NC-SA 4.0

what is it?

The big-belly seahorse or pot-bellied seahorse , Hippocampus abdominalis , is one of the largest seahorse species in the world with a length of up to 35 cm, and is the largest in Australia. Seahorses are members of the family Syngnathidae, and are teleost fishes. They are found in southeast Australia and New Zealand, and are listed on Appendix II of CITES.

base stats

  • NL sightings 0iNaturalist, research grade
  • worldwide 4,078iNaturalist observations
  • threat LCleast concern

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
  • 4,078 observations worldwide on iNaturalist.
  • Scientifically named by René Lesson in 1827 (199 years ago).

fact sheet

English
Bigbelly Seahorse
scientific name
Hippocampus abdominalis
class
Actinopterygii
order
Syngnathiformes
family
Syngnathidae
IUCN Red List
LC · least concern
sightings in NL
0
sightings worldwide
4,078
GBIF records in NL
0
weight
—
length
—
lifespan
—
named
1827 by René Lesson

IUCN in Dutch: niet bedreigd. Blank means the sources don't say.

relatives· Syngnathidae

Sources: iNaturalist taxon 69837, Wikidata Q572365, GBIF 5201032, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

stan runge 9114b54 source